When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Solve a - 4a = -7a + 5x + 7 for a in terms of x.
| -\(\frac{1}{5}\)x + \(\frac{3}{5}\) | |
| x + \(\frac{3}{14}\) | |
| -1\(\frac{1}{9}\)x - 1 | |
| 1\(\frac{1}{8}\)x + \(\frac{7}{8}\) |